Abstract
Wastewater treatment plants can be classified as energy-intensive facilities, as they account for up to 35 percent of municipal energy consumption. Pumps and aeration systems consume a significant portion of energy within the wastewater plants in particular. The cost of energy consumption for wastewater treatment processes reaches up to 40% of the total operating cost. In case of the WWTPs with the activated sludge systems, about 50% of energy is used for aeration and mixing purposes. At WWTPs, energy consumption is often correlated with the magnitude and type of pollutant load, which can influence the treatment methods and technologies used in the WWTP. In many cases wastewater treatment plants are operated without optimized measures for process optimization. A detailed study of the energy consumption should be executed in order to determine the optimization potential. This paper presents the energy consumption in municipal wastewater treatment plant in Rzeszow (Poland). In the year 2016, parameters of raw and treated wastewater were tested. The data related to energy consumption in plants allowed us to determine the energy intensity coefficients. Total consumption was measured. Indicators of energy consumption per cubic meter and removed load were calculated.
Highlights
IntroductionWastewater treatment plants use for up to 35 percent of the total municipal energy consumption
At the wastewater treatment plants, energy consumption is often correlated to the magnitude and type of pollutant load, which can influence the treatment methods and technologies used in the WWTP
The total energy consumption amounted to 13.39 GWh, while electricity consumption was measured at the level of 7.21 GWh and accounted for 53.8% of total consumption in 2016
Summary
Wastewater treatment plants use for up to 35 percent of the total municipal energy consumption. Pumps and aeration systems consume a significant portion of energy within the wastewater plants in particular. The cost of energy consumption for wastewater treatment processes reaches up to 40% of the total operating cost. At the WWTPs with the activated sludge process used, about 50% of energy is used for aeration and mixing purposes [1,2,3,4]. At the wastewater treatment plants, energy consumption is often correlated to the magnitude and type of pollutant load, which can influence the treatment methods and technologies used in the WWTP. Energy optimization could be obtained through reduction of the electric energy consumption of the individual units of the WWTP, and via recovering energy from sewage sludge or wastewater [6,7,8]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
